tty: ipwireless: Remove redundant NULL check before kfree

kfree on NULL pointer is a no-op.
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/ipwireless/hardware.c

@@ -1732,7 +1732,6 @@ void ipwireless_hardware_free(struct ipw_hardware *hw)
 	flush_work(&hw->work_rx);
 
 	for (i = 0; i < NL_NUM_OF_ADDRESSES; i++)
-		if (hw->packet_assembler[i] != NULL)
 		kfree(hw->packet_assembler[i]);
 
 	for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)